Exposuretime - IAI SP-20000M-PMCL User Manual

SP-20000-PMCL User Manual (Ver. 3.1)

ExposureTime

This command is effective only when Exposure Mode is set to Timed. It is for setting exposure time.
The setting step for exposure time is 1 μsec per step.
Minimum: 10u
l
Note: Actual Exposure Time: 304μs
Maximum: 8sec (When Frame Start Trigger Mode is ON)
l
Actual Exposure Time
The actual exposure time is shown in the following table due to the sensor characteristics. But the
exposure active signal is same as the exposure time.
Tap Geometry
1X8-1Y
1X4-1Y
1X8-1Y
1X4-1Y
1X2-1Y
1X2-1Y
Notes:
In Continuous Trigger operation with Frame Start Trigger Mode OFF, the maximum Exposure
Time is limited by the frame rate setting. In 1X8–1Y camera output format and 80 MHz Camera
Link pixel clock, the maximum setting value is 7.999742 sec which is 258 μs smaller than 8
seconds, the maximum value of frame rate setting.
In EPS Trigger operation (Frame Start Trigger Mode set to On), the maximum exposure time is not
influenced and therefore it is 8 seconds as the maximum. Due to the characteristics of the
camera's sensor, the black level may rise if a long time exposure is used, or if the sensor
temperature increases. Although this black level variance is compensated in the camera, the
performance needed to maintain the dynamic range for a maximum exposure of 8 seconds is
guaranteed only under the following conditions.
SP-20000M-PMCL: The ambient temperature is up to 25°C.
SP-20000C-PMCL: The ambient temperature is up to 15°C.
Camera Link Clock
80MHz
60MHz
80MHz
60MHz
Sensor Acual Exposure Time
Exposure Time + 294us
Exposure Time + 395us
Exposure Time + 589us
Exposure Time + 791us
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Main Functions